Attachment for cots or hospital beds



J. c. VAN SLYKE.

ATTACHMENT FOR COTS 0R HOSPITAL BEDS.

2 SHEETS-SHEET I.

FILED NOV. 3,1919- 7 x W i x3 2 76 15 1Q. w 5 "Mu m w (F3 ,4. Am -6 I FFeb. 20, 1923. 1,445,982. J.- C. VAN SLYKE. 7 ATTACHMENT FOR COTS 0RHOSPITAL BEDS.

FILED NOV- 3, 1919- 2 SHEETS SHEET 2- T: -5- fi-E- INVENTOR A TTORIVEYPatented Feb. 20, 1923.

JOHN (IL-VAN? SLYK-E, :OFNMASHINGTON, 2IDISTRIG$ 01? i CQLUEMBILA.

"ATTACHMENT; FOR COTS "OR HOSPITAL-BEDS.

Application filed Noreinb'er 3, 1919. -'Seria1-- 1 T0."335',243;

Tofllt 1671 omi mag concern Be it-glrnown thatiI, JOHN Cf-VANrSLYKE, acitizen of" the United States, residing at lVa'sh-ington, in theDistrict of Columbia, liaw'einvented' newand useful I-m-pro ve'ments ini lttachments forGots or Hospital Beds;

-1nyformer PatentjN 0. 985,307, with aninn (proved -and simplified meansof-attachment and operation whereby theoperating eab-les are preventedfromd'id-ing ,overand bin-din on the-pulley sheaves, completely coveringthe cables within thestainlards by supporti-n-g the operating;- meanswithin acasing "communicating with "the Ibottoni or one standard, andprovidingmeans for adjustably securing the standards in fixed relationto 'the oot or bed -'str-uoture Whieh "will not scratth nor near theenamel or paint tl-iereof athen removed or adjusted to other l struc- 30titres of different sizes.

W hile the preferred -"form s of this inven- -tion are illustrated inthe accompanying sheets (if drawing, yet itis to be understood thatn'ii-nor detail ehan-ges may be made without departing from the scopethereof. Figure l of the drawing"represents a View inside elevatien ofaT hospitalcot or invalid bed to which" this improved attachment has beenapplie'd, with the central portion of the :bed broken away.

' Fig. Qis a view-in end elevatien ofFFig. .1,

illustrating the operating ineehan-isni.

} Fig. 3 1 is Jan enlarged detail v iew in side elevation: of: one' ofthe pulley sheaves.

45 :F-ig. 4: .is -21. View in front -ele\"ation-of Fig.6.

I Fig. 5 is-an: enlarged detail to p: 91 an View 0f the means :f-orattachingstandardsto i the itop reil o' fthei cot or'loed. I

1F igai 6-=isanvie'wtin side elevation o'f Fig 5.

EFig. l7 :ishn enlarged detail :view in end elexiationioltheeoper ting:mechanism with :the i'frontspa rt of" the easing ln'oken .axmy.

nFig/Ris .a-.\":ie\v in side elevatimiof Fig. 55 ,7, with part; of. theside of: the casingi broken away.

within a standard;

'Fi'g; 9 is an enlarged detailxview iir'verti- "0511 sectionillustrating the tension means lT-he drawing illustrates this.in'rentionas eppl'iedgtman ordinary form of ironfhedpr cot 1'11Wln'chthei'headand footrails 1 are of tnbular construction supportingbetweenthemfthesidennd end reilsiQ and "3 of ordi' nary fo-rm'.upon'twhich the usual springs and mattress e rests. The canvas coreredframe 5 resting LlPOIl'thGdnflttIGSS is'p-referahly constructed inaccordance Withmy 'forn er Patent, "N09985Q306, in'wvhich'the.operating:

Wheel '6. of the "adjustingxnieans extends from the end opposite 'theadjustable side member '7 of thefranne, therebyje'qua'lfly .dis-

tributiingthe Weight Within the frame and causing it to balance whenraised above.

mattress.

Pulley sheaves 8 are i' otatahlyimounted on" the upper ends ofthe'tubular standards '9,'.the casings of which communicate aviththeinterior of the standardsand are cut away in the 'fro-ntQasillustrated inFigQ 4, and the .upper'wall 10 of" each-side of the casingextends slightly beyond the circumference .ofthe' pulley Wheel 11, andthisj'p-ro- "jecti'on is provided with means, such asa FY connecting pin'12, :Which will positiirely glthefpulley prevent the cable "from leetinWheel and binding in the casing.

The tubular standards 9 are: cich secured to thetop of theheadan'd'fo'otirails'by'two plates 1?; and l einbra cingthestandards andhaving-oneach'side ofthe stan'derfd apertures through which h0oked.bo'lts 15l:i re

' passed with 'thehooked end 16 engaging the rail an d the opposite end17 'exteirdingbe yond the outer plate "sorew threade'd' Land adapted-toreceive-a securing nut" 18"; Where by the'plates are:drawn'together'toengage the standard "and the inner plate to engage thera ilandinain'tnin the standard infix'ed relation lthereto. The lower end ofthe standard secured to l the fiend 'rails by f bracket 19,"havin'g asleeve iat one end and set screw-for --engztging the bottom of thestandard, said blil-Cktjblll provided with "aflongitudinal slot throughwhich a' hooked 'bOltQOds passed, adaptedto-en-ga-ge theend rail andl'iavii'ig -n securing nut 2l.'up.onthe7" lower side of the bracket. tTim-operating mechanism comprises a t ed to engage a ried upon the lowerend of one of the standards and communicating with the interior thereof.The other standard is provided with a pulley sheave 26 upon the lowerend thereof, which also communicates with the interior of the standard.Cables 27 and 28 for raising or lowering the frame are secured to thewinding drum, one of which passes through the casing and up through thestandard to which the casing is attached over the pulley wheel at thetop thereof, and the other passes out of the casing through an apertureprovided therefor under the cot and through the pulley sheave on thebottom of the other standard and thence through that standard and outover the pulley'wheel at the top thereof. Both cables are secured at.their free ends to slings having branches 2 9 and 30 adaptedto bedetachably secured to the ends of the frame, as shown in Fig. 2. Theworm shaftis operated by a handle 31 extending to the rear of the casingof the operating mechanism. The winding drum is provided with anautomatic stop and the cables are attached to the drum in such a mannerthat the stop will prevent further rotation as the ends of the cableapproach the pulley sheaves thereby preventing the slings from strikingand binding in the sheaves. This automatic stop preferably comprises apin 32 carried on the worm wheel or drum and extending from the outerside thereof, which is adaptrotatable stop member pivotally mounted onthe interior of the side wall of the casing. This stop member comprisestwo arms 33 and pivot 34;. The arms extend at right angles from eachother and adapted to be engaged on the inner side by the pin 82 and theouter sides are adapted to alternately engage the bottom of the carsing. By this means it is arranged that two rotations of the drum maytake place in either direction before the automatic stop functions; I

As seen in Fig. 8,-when the drum rotates to the left the pin 32 willengage one of the arms of the stop, and as the stop ispivotally mounted,it will be rotated about its pivot, allowing the pin to continue in itsmovement and the outer side of the member of-the stop so engaged willcontact with the bottom of the casing as shown, bringing the other armof the stop into a vertical position, whereby upon the continuedrotation of the drum the pin 32 will engage the outer side of this otherarm of the stop and thereby prevent further rotation in that direction.Upon reverse movement theaction just described will be repeated, but inthe opposite direction.

The cables are received in grooves 35 of screw-threaded form upon thedrum and are secured thereto in such relation that the autO matic stopwill prevent movement just being over the drum is under constanttension.

It is readily seen by this construction that the frame may be raised orlowered in relation to the mattress and, by the use of the worm shaftand wheel, the patients weight upon the frame will cause the operatingmechanism to bind or look so that the frame will remain in fixedposition.

By making the slings detachably connected to the ends of the frame,it'is readily understood that by detaching both of the branches of onesling, the opposite end of the frame may be raised or loweredindependently; likewise, by detaching the branches of both slings fromone side of the frame, the other side may be raised or loweredindependently. Byimounting the sheaves on the top of the standards sothat theywill rotate thereon, the cables are prevented from binding whenone side of the frame is raised or lowered. By mounting the operatingmechanism upon the bottom of one standard, the cables are not exposed atthe end'sof the cot or bed. When itisdesired to adjust the uppersecuring means of the standards, the nuts of the hook arms are removed,or sufliciently loosened, so that the plates may be separated and thehooks disengaged from the top rail, thus preventing sliding of theattachment over the standard or the rail, which would scratch or mar theenamel or paint.

hat I claim is:

1. A hoisting attachment of the character described, comprising a hollowstandard; a sheave mounted at one end thereojf and around which a cablis adapted topass and through the hollow standard; a casing disposed onthe other end ofthestandard; a

drum rotatably mounted within the casing,

and around which the cable is adapted to be wound; a gear associatedwith the drum; a

and operatively associated with the driving a pinion; a portion of astop mechanism carried by one of the rotating parts; and a bell-cranklever pivotally mounted, between the ends of the arms of the lever, upona portion of the apparatus movable in relation to the other componentotth stop mechanism and operable to permit rotative movement of thecoacting part, in one direction, to trip one of the arms of thebell-crank and pass over it, and at the same time bring the other arminto the path of travel of the coacting part to act as a positive stopagainst movement past the arm.

2. The structure set forth in claim 1 wherein a frame, mounted oncables, is suspended from standards as set forth in the claim; and meansfor detachably securing the standards to a hospital bed or the like, thecasing being detachably mounted on the standard to be interchangeableWith a sheave instead.

JoHN o. VAN sLYKEI

